.chitiet{
    display: block;
    clear: both;
    padding-top: 10px;
}
.infor {
    display: block;
    clear: both;
    width: 100%;
}
.infor .picture {
    width: 45%;
    height: 527px;
    text-align: center;
    vertical-align: middle;
    float: left;
    border: 1px solid #fff; 
    position: relative;
}
.infor .picture img {
    margin: auto;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
}